Many answers indicated it was a really bad idea to use 2 servos, and that was "accepted" as the correct answer. I piped in an answered that most pro RC dudes used 2 and linked to pics. I also mentioned that wrong answers is why I quit spending time on that web site. Too many give wrong answers but get rewarded for it because their 'editing' skills make good looking answers.

So anyhow, I got several 'points' for my answer, and now they have decided to move it from an answer to a comment, to prevent that.

There are 2 types on that site; pHd types of which I am not, and the 'do it yourself' crowd of which I thought I helped, a little. But the pHd types do not like having it pointed out when they are being stupid.

So anyhow, me personally, I love and recommend LEGOs for robotics. You can do so much more with them, without soldering and drilling. You spend your time on robotics, not electrical or mechanical engineering.

Spiked - What do you recommend for my 8 year old boy and Lego robotics?

The LEGO line has a new version that is announced, but not quite out yet, EV3. The Bellvue and Lynnwood LEGO stores will stock them, I'm pretty sure.

In the meantime, there is nothing wrong with the NXT versions. V1 can be upgraded to V2 with just a free firmware update. There are some hardware differences in the sensors and included parts, but nothing major. Check eBay for a V1 or V2 LEGO NXT set.

BTW, I never had kids, so I'm not sure if 8 is too young or not. I would think with some parental guidance, it would be fine, but I think it would take some guidance/help, until 7th grade or so. There are several 'pre-designed' bots your kids can build/play with until they get a desire to try one on their own.

Is some robotting I did a while back. This is what got me initially interested in IMUs, which led to quads, and victor just happen to peak my interest with FPV. Then he, joel and robert also got me hooked on crack (yak obviously I hope). Come on warmer weather.